docs: add T-Buddy iOS app reference

[JakobLichterfeld]

as discussed in: #5094 (comment)

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[LukStankovic]

Hi @JakobLichterfeld, do we want to add only open source apps to docs? I don't know if T-Buddy will be open source or not (currently it isn't open source but only in TestFlight). But we can add add https://hedgiemate.com/ and https://fastcruise.app/ as well for iOS. 🙌🏻

I found that PR for Fastcruise already exists here: #4922. I can edit it in this PR and add all apps at once if you want.

What do you think?

[JakobLichterfeld]

I don't know if T-Buddy will be open source or not (currently it isn't open source but only in TestFlight)

It is MIT, innit? https://github.com/garanda21/t-buddy/blob/main/LICENSE

[LukStankovic]

I was actually basing my comment on the README, where it mentions that the app is proprietary software. That's why I assumed it was closed source.

If I misunderstood or if the info is outdated, sorry about that! 🙏🏻